In Edmond on Second street there is a historical one room school house, the first one in the county, maybe state or something like that which has been very well restored/preserved, I'll look for pics...
Edit: Here is a link, and it was the first school house in the Oklahoma Territory...
http://www.edmondhistory.org/education/1889-territorial-schoolhouse/
There's still a one room school house standing a few miles N of where I live, it's completely grown over and hard to see from the road even though it's at an intersection, will try to get some pics.